|Occupation||Pet, Attack Dog|
|Family members||Veronica Mars (Owner)|
Keith Mars (Owner)
- Veronica: I'll be at home. With the only sane member of the Mars family.
Keith: The one who eats from the garbage and keeps bringing me dead birds?
Veronica: That's the one.
- The dog who portrayed Backup changed after a few episodes: initially played by the white and brown American bulldog Gordo, he was replaced with peachy-cream colored pit bull named Lefty.